Line-spacer for type-writing machines.



' I H I PA-TENTED'MAY5 19-08.. I J. s. SOUTHERDEN. Y

mm SPACER FOR TYPE WRITING MACHINES.

2 SHEETS-SHEET 1.

APPLICATION FILED FEB, 21"), 1906.

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LINE SPACER FOR-TYPE WRITING MADHINES.

APPLICATION FILED FEB; 20, 1906.

ZEBEBTS-BHEBT z.

w/ruessssi PATENTED'MAI5,1908 j UNITED STATES PATENT OFFICE.

LINE-SPACER FOR TYPE-WRITING- MACHINES.

Specification of Letters Patent. I

Patented May 5, 1908.

Application filed February 20, 1906. Serial No. 302,093.

T all whom it may concern:

Be it known that I, J ornv STEPHEN SOUTH- ERDEN, a subject'of the-King of-the United Kin dom of Great Britain and Ireland, and resident of 159 Queen street, Brisbane, in the State of Queensland, Commonwealth of- Australia, have invented certain new and useful Improvements 1n Lme- Spacers for Type-:

Writing Machines, of which the following is a sp'eclfication.

This invention relates to a device for rotating the platen whereby the space between i the lines of ty e-writing is notlimited to outer ring, a sma fl s piral spring fits in'a hole drilled in' the boss opposite the end of the recess and to break the enga ement-is a piston working in a hole in the disk to the end of which is fixed a pin say at right angles which when enga ed with the ball, breaks the contact with tie fixed ring and allows the boss and disk to rotate free. I

The

piston projects beyond the periphery of the isk and contacts with a stop on the frame of the machine, its travel is limited by.

a slot and pin; This piston may be substituted by a trigger as hereinafter described.

Secured to the face of the free disk is-a skew bevel toothed wheel operated by a skew bevel segment. I

The device is shown as applied to a Smith Premier type-writing machine and a means of thus operating the device, the operating mechanism however will vary according to the type of machine to which it is applied.

Reference is now made to the drawings forming part of this specification in which Figure l is a broken plan of machine with device attached. Fig. 2 end view of same. Fig. 3 front elevation of adjustable dial. Fig. 4 front elevation of skew bevel segment. Fig. 5 section through A A, BB Fig. 1. Fig. 6 internal face view of free disk. Fig. 7 section through C C, D D Fig. 1 with front ele- Fig. 8 end'elevation of free disk with skcwbevel wheel removed,

showin modified device foroperating the ball. ig. 9 sectional view of modified devlce. a

The reference letters indicate like parts in all figures.

A is the. front of the frame of the machine and A the side or one end. B is the frame attached to the platen and carrying the existing brake mechanism; B the releasing hook to free the platen and platen frame B; O the platen, D a flanged collar let in andscrewed on to the end of the platen E a disk with a boss, E fitting into the collar D and E a tapered recess in the boss E F is a piston working in a hole in disk E- and F a in on end ofpiston en aging with ball G; a slot in iston and F a pin to limit its travel; H 1s a light spiral spring pressing the ball into contact with the collar D, which does not take place until the spring is extended thus allowing the disk E to move freely.

J is a stop on frame of machine against which the end of the piston F abuts.

K is a skew bevel toothed wheel secured to the end of the disk -E, and K skew bevel segment pinned or keyed on to the operatin lever L and engaging with the skew bevefi .yvheel K.

M is a dial with a threaded screw M- formed integrally with thesame which screws into the frame A, N a lock nut with handle N* which on turning against frame A locks dial in osition desired.

P is the 'al pointer formed integrally with the collar P pinned on to the lever L.

Q'is a stop, R lever handle, and S spiral spring fastened to frame of machine and to lever L for bringing back the latter into rest position.

T is the spindle of the platen.

V is a spiral spring around the platen spindle and within the hole of the skew bevel wheel K, one end is fastened to the disk E and the other end to the frame B the spring brings the skew bevel wheel K to its rest position on releasing the operating lever.

In the modified device as shown in Figs. 8 and 9, W is a slotted trigger constrained to run within its travel limit concentrically Y. W projecting foot abutting against stop J, W anarm at right angles inserted in a slot through the face of the disk for rewith the disk and held thereto by set screw leasing ball from gripiping. W lug at right round inside the bevel whee on the frame of the machine the ball is pushed out of engagementv with the fixed collar allowing free movement of the laten.

In operating the invention the dia is set to the s ace re uiredallowing the 'ointer to trave from t e rest position'to t e stop on the dial, the lever handle is manipulated ,in' the usual manner and the spindle of same carrying the toothed segment enga ing with the toothed wheel K rotates the ree disk,

which at the first art of its movement frees 'the piston from t e block on the frame of the machine and allows the ball G to grip, the said ball being impelled into osition by the small. spiralspring H and t e rest'of the movement rotates the laten. On releasing the lever handle R it is brought back into its normalor rest position by the s ring S on the spindle L; the spiral s ring coiled K serves to hold the free'disk in contact with the abutment J, so that when the platen is raised to examine the writing, the free disk be returned into position of its original gear adjustment. l

Having now described'my' invention, what I claim as new and desire to secure by Letters Patent is:

1. In'improvements inf line spacers for type-writing machines, the combination of a platen, a disk revolving upon the platen spindle, a boss having a tapered recess, said boss rotating in the recessed flanged end of the platen, a ball or roller traveling in the tapered recess, a stop on the frame, a release member adapted to engage with the ball on contact with the stop for automatically releasing the ball from the gri and means for limiting the travel of the re easing member.

2, In improvements in line spacers for type writing machines, the combination of a platen, a collar thereon and the spacing lever, of a graduated dial provided with a stop, mounted upon the spacing lever, a lock nut having a handle adapted to lock said dial against the frame of the machine, a pointer fixed to the s acing lever the travel of said pointer being limited by the stop on the dial,

a spiral spring fastened to the frame of the machme and spacing lever, a diskfitting into the collar. on the platen,'a skew beveled segment keyed on said spacing lever and a skew bevel wheel secured to the disk and engaging with the said segment.

In witness whereof I have hereunto set my hand in presence of two witnesses. I

- JOHN STEPHEN SOUTHERDEN. Witnesses: i E. GADAN HALL,

C; T. PowERs. 

